Marie Read / Tufted puffin (Fratercula cirrhata), adult in breeding plumage flying in preparing to land, St. Paul, Pribilof Islands, Alaska, USA, July.

Brent Stephenson / Northern giant petrel (Macronectes halli) flying over sea, during moult in the outer wing, with several inner primaries/outer secondaries missing, South Atlantic, January.

Brent Stephenson / Northern Giant petrel (Macronectes halli) flying low over the sea, showing moult in the outer wing, with several inner primaries/outer secondaries missin, South Atlantic, January.

Bernard Castelein / Osprey (Pandion haliaetus) juvenile in flight, carrying fish in talons. Allahein River, Gambia.

Bernard Castelein / Spur-winged lapwing (Vanellus spinosus) taking off, spur visible on wing edge. Allahein River, Gambia.